CTS Turbo Audi S4/S5 (B9) High Flow Cat DIY Install & Revs

CTS Turbo Audi S4/S5 (B9) High Flow Cat DIY Install & Revs

In this video, we take you through the installation of the CTS Turbo test pipe/high flow cat for the Audi S4/S5 3.0T (B9). At the end of the video, we do a quick sound clip of the cold start and revs as well!

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Phil Kach says:

Really wish CTS would provide heat shielding as an option for this DP..

GlacierS5 says:

Does anyone know if the CEL comes on with the CTS Downpipe on a B9, if you're already APR Stage 1? What's our options?

Tawfiq Oladoja says:

is it ok with the CTS downpipe not having a heat shield? Can anything bad happen without the heat shield?

Geris Makris says:

EMD… what gains did you see on the dyno with the CTS DP? They don't have figures listed on their site? What are the pros/cons of going with CAT vs. no CAT?

Jie Li says:

How come your website no long have this part? After install will engine light come on?

Vincent Fresco says:

With a downpipe.. is a tune required ?

AxiomAssets says:

To me it looks like the factory set up is pretty healthy. I'm running a RENN tune on my S5 Sportback, not yet had a chance to rum a QM, but the car is able to do repeatable 0-60 runs in 3.5-3.7 sec range. With/without launch control. Great motor collab. between Porsche/Audi on the new 3.0T. Smooth with a massive hit of torque down low.

Tim says:

Why does title say High Flow Cat? This is an open pipe. Not a catalytic converter at all.

Vengly Kong says:

Is there any tune, that I can use with this product?

Adrian B says:

Is there a tune for it ? I assume it's useless to install a downpipe and run it with no tune

Mark T says:

Thank you for posting,this is exactly what I am looking for on my B9 S5, does the sports cat run ok with standard ecu software with no check engine lights?

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